Does the first day of Fall hit on the first of September or a few weeks later? When does the change of seasons actually occur? Depending on what you’re looking for, season changes have two different dates.
For every season, there is a meteorological and astronomical season range. We are all familiar with astronomical season changes. This time frame is based on the rotation of the Earth. The seasons are divided into equinoxes and solstices and pertain to where and when the sun passes over the equator. While these seasons don’t change, the length of each season varies year to year, with the season lasting between 89 and 93 days.
Since astronomical seasons vary so much in duration, meteorological seasons were created. In this unit of measurement, all seasons have an even three-month duration based on the temperature cycles of the year. This way of measurement has been used for data collection. December, January, and February are winter; March, April, and May are spring; June, July, and August are summer; and September, October, and November are fall. These stricter categories allow for consistent data recording, studies, and data analysis. This type of analysis can benefit not only weather studies but also sectors such as commerce and agriculture. The most important data deals with precipitation, droughts, and other weather hazards.
How do you define the start and end of a season?